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Submission #67682

# Submission time Handle Problem Language Result Execution time Memory
67682 2018-08-15T08:34:59 Z zscoder The Big Prize (IOI17_prize) C++17
94.85 / 100
 87 ms 3128 KB 
#include "prize.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef pair<int,int> ii;

#define fi first
#define se second
#define pb push_back
#define mp make_pair

ii dp[442311];
int n;
int totalquery;
const int MX = 10000;
ii query(int x)
{
	if(x<0||x>=n) return mp(0,0);
	if(dp[x].fi>=0) return dp[x];
	totalquery++; assert(totalquery<=MX);
	vector<int> a = ask(x);
	dp[x].fi=a[0]; dp[x].se=a[1]; return dp[x];
}

vi global;
vector<int> vec;
int newmax;

void solve(int l, int r)
{
	if(l>r) return ;
	//later optimize by using count 
	int mid=(l+r)>>1;
	ii cntl=query(vec[l]);
	assert(cntl.fi+cntl.se<=newmax);
	if(cntl.fi+cntl.se<newmax){global.pb(vec[l]); solve(l+1,r); return ;}
	ii cntr=query(vec[r]);
	assert(cntr.fi+cntr.se<=newmax);
	if(cntr.fi+cntr.se<newmax){global.pb(vec[r]); solve(l,r-1); return ;}
	ii tmp = query(vec[mid]);
	assert(tmp.fi+tmp.se<=newmax);
	if(tmp.fi+tmp.se<newmax)
	{
		global.pb(vec[mid]);
		solve(l,mid-1); solve(mid+1,r);
		return ;
	}
	int cntleft = tmp.fi-cntl.fi;
	int cntright = tmp.se-cntr.se;
	if(cntleft) solve(l,mid);
	if(cntright) solve(mid,r);
}

int find_best(int _n) 
{
	n=_n;
	for(int i=0;i<n;i++) {dp[i]=mp(-1,-1);vec.pb(i);}
	while(vec.size()>1)
	{
		global.clear(); int C=0; int cr=int(vec.size());
		while(cr>1)
		{
			C+=int(sqrt(cr))+1; cr=int(sqrt(cr));
		}
		C=min(C,int(vec.size()));
		newmax=0;
		for(int i=0;i<C;i++) 
		{
			newmax=max(newmax,query(vec[i]).fi+query(vec[i]).se);
		}
		for(int i=0;i<C;i++)
		{
			if(query(vec[i]).fi+query(vec[i]).se<newmax) global.pb(vec[i]);
		} 
		solve(C,int(vec.size())-1);
		vec=global; sort(vec.begin(),vec.end()); vec.erase(unique(vec.begin(),vec.end()),vec.end());
	}
	return vec[0];
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 2792 KB Output is correct
2 Correct 10 ms 2856 KB Output is correct
3 Correct 10 ms 2856 KB Output is correct
4 Correct 15 ms 2856 KB Output is correct
5 Correct 11 ms 2856 KB Output is correct
6 Correct 13 ms 2856 KB Output is correct
7 Correct 13 ms 2884 KB Output is correct
8 Correct 13 ms 2920 KB Output is correct
9 Correct 9 ms 3044 KB Output is correct
10 Correct 10 ms 3044 KB Output is correct

Subtask #2
74.85 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 3044 KB Output is correct
2 Correct 9 ms 3044 KB Output is correct
3 Correct 8 ms 3044 KB Output is correct
4 Correct 14 ms 3044 KB Output is correct
5 Correct 13 ms 3044 KB Output is correct
6 Correct 14 ms 3044 KB Output is correct
7 Correct 12 ms 3044 KB Output is correct
8 Correct 14 ms 3044 KB Output is correct
9 Correct 10 ms 3044 KB Output is correct
10 Correct 9 ms 3044 KB Output is correct
11 Correct 15 ms 3044 KB Output is correct
12 Correct 20 ms 3044 KB Output is correct
13 Correct 17 ms 3044 KB Output is correct
14 Correct 18 ms 3044 KB Output is correct
15 Partially correct 55 ms 3044 KB Partially correct - number of queries: 5153
16 Partially correct 48 ms 3044 KB Partially correct - number of queries: 5406
17 Partially correct 66 ms 3044 KB Partially correct - number of queries: 5376
18 Partially correct 65 ms 3044 KB Partially correct - number of queries: 5373
19 Partially correct 41 ms 3044 KB Partially correct - number of queries: 5111
20 Correct 50 ms 3044 KB Output is correct
21 Partially correct 37 ms 3044 KB Partially correct - number of queries: 5356
22 Correct 46 ms 3044 KB Output is correct
23 Correct 16 ms 3044 KB Output is correct
24 Correct 9 ms 3044 KB Output is correct
25 Correct 47 ms 3044 KB Output is correct
26 Partially correct 51 ms 3044 KB Partially correct - number of queries: 5032
27 Correct 14 ms 3044 KB Output is correct
28 Correct 62 ms 3044 KB Output is correct
29 Correct 61 ms 3044 KB Output is correct
30 Partially correct 73 ms 3044 KB Partially correct - number of queries: 5346
31 Partially correct 68 ms 3044 KB Partially correct - number of queries: 5382
32 Correct 17 ms 3044 KB Output is correct
33 Correct 3 ms 3044 KB Output is correct
34 Partially correct 79 ms 3044 KB Partially correct - number of queries: 5400
35 Correct 18 ms 3044 KB Output is correct
36 Partially correct 37 ms 3044 KB Partially correct - number of queries: 5392
37 Correct 20 ms 3044 KB Output is correct
38 Correct 14 ms 3044 KB Output is correct
39 Partially correct 61 ms 3044 KB Partially correct - number of queries: 5370
40 Correct 48 ms 3044 KB Output is correct
41 Partially correct 28 ms 3044 KB Partially correct - number of queries: 5402
42 Partially correct 61 ms 3044 KB Partially correct - number of queries: 5402
43 Partially correct 49 ms 3044 KB Partially correct - number of queries: 5260
44 Partially correct 83 ms 3044 KB Partially correct - number of queries: 5342
45 Correct 75 ms 3044 KB Output is correct
46 Partially correct 73 ms 3044 KB Partially correct - number of queries: 5397
47 Partially correct 65 ms 3044 KB Partially correct - number of queries: 5008
48 Partially correct 57 ms 3044 KB Partially correct - number of queries: 5393
49 Partially correct 29 ms 3044 KB Partially correct - number of queries: 5405
50 Partially correct 37 ms 3044 KB Partially correct - number of queries: 5357
51 Partially correct 60 ms 3044 KB Partially correct - number of queries: 5392
52 Partially correct 72 ms 3044 KB Partially correct - number of queries: 5419
53 Correct 10 ms 3044 KB Output is correct
54 Partially correct 68 ms 3044 KB Partially correct - number of queries: 5328
55 Partially correct 53 ms 3044 KB Partially correct - number of queries: 5394
56 Partially correct 62 ms 3044 KB Partially correct - number of queries: 5372
57 Partially correct 48 ms 3044 KB Partially correct - number of queries: 5336
58 Partially correct 68 ms 3044 KB Partially correct - number of queries: 5388
59 Partially correct 66 ms 3044 KB Partially correct - number of queries: 5401
60 Partially correct 75 ms 3044 KB Partially correct - number of queries: 5373
61 Correct 11 ms 3044 KB Output is correct
62 Correct 13 ms 3044 KB Output is correct
63 Correct 8 ms 3044 KB Output is correct
64 Correct 13 ms 3044 KB Output is correct
65 Correct 9 ms 3044 KB Output is correct
66 Correct 8 ms 3044 KB Output is correct
67 Correct 16 ms 3044 KB Output is correct
68 Correct 10 ms 3044 KB Output is correct
69 Correct 14 ms 3044 KB Output is correct
70 Correct 14 ms 3044 KB Output is correct
71 Partially correct 50 ms 3044 KB Partially correct - number of queries: 5241
72 Correct 13 ms 3120 KB Output is correct
73 Partially correct 77 ms 3120 KB Partially correct - number of queries: 5178
74 Partially correct 69 ms 3120 KB Partially correct - number of queries: 5205
75 Correct 13 ms 3120 KB Output is correct
76 Correct 46 ms 3120 KB Output is correct
77 Partially correct 65 ms 3120 KB Partially correct - number of queries: 5515
78 Correct 18 ms 3120 KB Output is correct
79 Correct 34 ms 3120 KB Output is correct
80 Partially correct 87 ms 3120 KB Partially correct - number of queries: 5500
81 Partially correct 49 ms 3128 KB Partially correct - number of queries: 5490
82 Partially correct 63 ms 3128 KB Partially correct - number of queries: 5457
83 Correct 10 ms 3128 KB Output is correct
84 Correct 65 ms 3128 KB Output is correct
85 Partially correct 52 ms 3128 KB Partially correct - number of queries: 5433
86 Correct 10 ms 3128 KB Output is correct
87 Correct 7 ms 3128 KB Output is correct
88 Correct 11 ms 3128 KB Output is correct
89 Correct 11 ms 3128 KB Output is correct
90 Correct 11 ms 3128 KB Output is correct
91 Correct 12 ms 3128 KB Output is correct
92 Correct 14 ms 3128 KB Output is correct
93 Correct 18 ms 3128 KB Output is correct
94 Correct 15 ms 3128 KB Output is correct
95 Correct 7 ms 3128 KB Output is correct
96 Correct 15 ms 3128 KB Output is correct
97 Correct 10 ms 3128 KB Output is correct